These Regulations revise guiding principles in the NHS Constitution, which was established in law by section 1 of the Health Act 2009. Section 4 of that Act provides that revisions may not be made to the guiding principles unless made by regulations. These Regulations substitute two of the guiding principles in the NHS Constitution. They also revoke a previous revision made to the first guiding principle by regulation 3 of the National Health Service (Revision of NHS Constitution—Principles) Regulations 2013.